ios - Sparrow: How to have different events for touch and drag -


basically want touch image rotate centre 90 degrees. drag image move (without rotating). 

- (void) onimagetouched:(sptouchevent *)event {     spimage *img = (spimage *)event.target;     sptouch *drag = [[event toucheswithtarget:self andphase:sptouchphasemoved] anyobject];     sptouch *touch = [[event toucheswithtarget:self andphase:sptouchphasebegan] anyobject];     float offsetx, offsety;     if(touch){         sppoint *initial = [touch locationinspace:self];         offsetx = initial.x - img.x;         offsety = initial.y - img.y;     }     if (drag) {         sppoint *dragposition = [drag locationinspace:self];         nslog(@"touched (%f %f)",dragposition.x, dragposition.y);         //img.x = dragposition.x - offsetx;         //img.y = dragposition.y - offsety;      }     else{         img.pivotx = img.width / 2.0f;         img.pivoty = img.height / 2.0f;         nslog(@"rotated aboout(%f %f)",img.pivotx,img.pivoty);         //img.rotation = sp_d2r(90);     }  }

above code.

when drag it, move image's position quite far pointers. also, @ start , end of dragging, image rotates.

when tap it, disappears. (maybe move or rotate somewhere outside screen)

any suggestions?

ok woould this:

- (void) onimagetouched:(sptouchevent *)event {     spimage *img = (spimage *)event.target;     sptouch *drag = [[event toucheswithtarget:self andphase:sptouchphasemoved] anyobject];     sptouch *touch = [[event toucheswithtarget:self andphase:sptouchphasebegan] anyobject];     sptouch *endtouch = [[event toucheswithtarget:self andphase:sptouchphaseended] anyobject];     float offsetx, offsety;         static bool dragging = no;     if(touch){         dragging = no;     } else if (drag) {         dragging = yes;         sppoint *dragposition = [drag locationinspace:self];         nslog(@"touched (%f %f)",dragposition.x, dragposition.y);         img.x = dragposition.x;         img.y = dragposition.y;     }     else if (endtouch) {         if (!dragging) {             img.pivotx = img.width / 2.0f;             img.pivoty = img.height / 2.0f;             nslog(@"rotated aboout(%f %f)",img.pivotx,img.pivoty);             img.rotation = sp_d2r(90);         }     }  }

this variant should solve problem of offset while dragging , fact when drag rotates anyway.

note static variable in method (dragging) better if put private variable in implementation (i saved time doing way ;) ).

i haven't test code idea should clear (i hope).

regards


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